Chemistry 1122 Self Test
mole
6.022 x 10 to the 23rd particles
According to the __________________, it is impossible to determine the exact location and velocity of an electron at any given moment
Heisenberg uncertainty principle
nitrogen
N
isotope
form of an element with the same atomic number but a diferent mass number
isotope
form of an element with the same atomic number but a different mass number
colloid
heterogeneous combination in which particles of one substance are suspended in another
mixture
heterogeneous combination of two or more substances that retain their individual properties
compound
homogeneous combination whose elements checmically combine in definite proportions
solution
homogeneous combination with a uniform consistency whose components do not chemically combine in definite proportions
A colloidal particle is a central particle surrounded by ____________
ions
atomic mass
mass of a quantity of atoms compared to the mass of the same quantity of carbon 12
solute
material being dissolved in a solution
solvent
material in which some other material is dissolved in a solution
Hg
mercury
anion
negatively charged ion
fractional crystallization
two crystalline solids
chromatography
two liquids with differing affinities
distillation and fractional distillation
two liquids with differing boiling points
alpha particle
two protons and two neutrons
filtration
undissolved solid in a liquid
potassium
K
conservation of mass
Law in an ordinary chemical reaction, the total mass of the reactants is equal to the total mass of the products.
multiple proportions
Law when two elements form two or more different compounds, the ratios of the masses of the second element that combine with a fixed mass of the first element can always be expressed as a small whole number.
quantum
a discrete quantity of energy
If a matter particle and an antimatter particle of equal mass come in contact with each other, the result is _____________ and result of tremendous
annihilation
amu
atomic mass units
The purpose of an ______________ is to explain the behavior of atoms by summarizing the facts known about them
atomic model
molecule
bonded collection of two or more atoms of the same or different elements
chromatography
gas in a gas
quarks
subatomic particles that are components of protons and neutrons
heterogeneous
substance with regions of differing properties
homogeneous
substance with uniform properties throughout
atomic number
number of protons in the nucleus of an atom
mass number
total number of particles in an atoms nucleus
According to the ______________ model of the atom, electrons do not follow orbits but form an electron could as they moved around the nucleus in orbitals
wave mechanical
seborgium
Sg
definite proportions
Law where a given compound always contains the same exact proportion of elements by mass.
lead
Pb
Ca
calcium
properties
characteristics that distinguish one substance from other substances
Cu
copper
cyclotron
device that accelerates particles in a spiral path
Au
gold
physical properties
observable properties
electron
one of the three subatomic particles of importance to chemists
O
oxygen
cation
positively charged ion
chemical properties
properties that describe how a substance chemically reacts with other substances
The ____________ proposed by Max Planck states what energy can only be absorbed or emitted in specific amounts called ____________
quantum theory, quanta
Tyndall effect
scattering of light by particles in a colloid
element
simplest homogeneous substance
atomic model
simplified image or description that represents the complex concept of the atom
atom
smallest particle that retains all properties of an element
Na
sodium
distillation
solid dissolved in a liquid
filtration
solid in a gas
